CN212642663U

CN212642663U - Bypass valve for underground screw

Info

Publication number: CN212642663U
Application number: CN202021405240.7U
Authority: CN
Inventors: 李宏; 唐梁; 李文哲; 刘嘉诚; 徐世杰; 李豫博
Original assignee: Sichuan Datan Energy Technology Co ltd
Current assignee: Sichuan Datan Energy Technology Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-02
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a bypass valve for an underground screw rod, which comprises a valve body, a valve core and a return spring, wherein a cylindrical component placing cavity is arranged in the valve body, an annular clamp spring groove is arranged on the cavity wall of the component placing cavity, and a clamp spring is arranged in the annular clamp spring groove; the valve core is arranged in the component placing cavity, the outer diameter of the valve core is the same as the diameter of the component placing cavity, a valve core through hole is formed in the valve core along the length direction of the valve core, an annular groove is formed in the end face of one end, away from the clamp spring, of the valve core, and the valve core through hole is located inside the annular groove; an internal thread structure is arranged on the cavity wall at one end of the component placing cavity, an adjusting cylinder is installed at the end of the component placing cavity in a threaded mode, an external thread structure is arranged on the outer cylindrical wall of the adjusting cylinder, the valve core is located between the clamp spring and the adjusting cylinder, one end of the return spring is arranged in the annular groove, and the other end of the return spring abuts against the end face of the adjusting cylinder; the utility model discloses can conveniently adjust return spring's return elasticity under the condition of not taking the bypass valve apart the back and reinstalling and adjusting.

Description

Bypass valve for underground screw

Technical Field

The utility model relates to a bypass valve field specifically is a bypass valve for screw rod in pit.

Background

The screw drilling tool is an important tool in petroleum geological drilling operation and mainly comprises a motor, a bypass valve, a transmission assembly, a universal shaft assembly and the like. The bypass valve comprises a valve body, a valve core, a return spring and the like, and the spring provides return elastic force for the valve core. The bypass valve for the existing screw drilling tool has the advantages that once the bypass valve is assembled, the compression amount of the return spring can be fixed, secondary adjustment cannot be performed, the return elastic force provided by the return spring can also be fixed, when the return elastic force provided by the return spring is not suitable for use conditions, the bypass valve needs to be disassembled and then reinstalled and adjusted, and the return elastic force for adjusting the return spring is inconvenient.

Disclosure of Invention

An object of the utility model is to provide a bypass valve for screw rod in pit aims at improving the very inconvenient problem of current bypass valve for screw rod drilling tool adjusting return spring's return elasticity.

The utility model discloses a realize like this: a bypass valve for an underground screw comprises a valve body, a valve core and a return spring, wherein a cylindrical component placing cavity is arranged in the valve body, an annular clamp spring groove is formed in the cavity wall of the component placing cavity, the central axis of the annular clamp spring groove is collinear with the central axis of the component placing cavity, and a clamp spring is arranged in the annular clamp spring groove; the valve core is arranged in the component placing cavity, the diameter of the valve core is the same as that of the component placing cavity, a valve core through hole is formed in the valve core along the length direction of the valve core, an annular groove is formed in the end face of one end, away from the clamp spring, of the valve core, and the valve core through hole is located inside the annular groove; the improved gas valve is characterized in that an internal thread structure is arranged on the wall of one end of the component placing cavity, an adjusting cylinder is installed at the end of the component placing cavity in a threaded mode, an external thread structure is arranged on the outer cylindrical wall of the adjusting cylinder, the valve core is located between the clamp spring and the adjusting cylinder, one end of the return spring is arranged in the annular groove, and the other end of the return spring is abutted against and pressed on the end face of the adjusting cylinder.

Furthermore, the cross section of the inner hole at one end of the adjusting cylinder is in a rectangular, regular hexagonal or spline structure, and the end is the end of the adjusting cylinder far away from the return spring.

Furthermore, the adjusting cylinder is provided with two adjusting concave holes on the end face away from one end of the return spring, and the adjusting concave holes are uniformly arranged along the circumferential direction of the adjusting cylinder.

Furthermore, a guide through groove is formed in the outer cylindrical wall of the valve core along the length direction of the valve core, and a guide protruding block matched with the guide through groove is arranged on the cavity wall of the component placing cavity corresponding to the guide through groove.

Further, all be provided with the external screw thread structure on the outer wall at valve body both ends, valve body return spring all uses stainless steel material to make with adjusting a section of thick bamboo.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses can conveniently adjust return spring's return elasticity under the condition of not taking the bypass valve apart the back and reinstalling and adjusting.

2. The cross section shape of the inner hole at one end of the adjusting cylinder is a rectangular, regular hexagonal or spline-shaped structure, the end of the adjusting cylinder is far away from one end of the return spring, and the adjusting cylinder can be conveniently screwed by using a tool through the arrangement of the rectangular, regular hexagonal or spline-shaped structures, namely the compression amount and the return elasticity of the return spring can be conveniently adjusted.

3. The outer cylinder wall of case is provided with the direction through groove along its length direction, and the position that corresponds to the direction through groove on the chamber wall in part placement chamber is provided with the direction lug with the logical groove looks adaptation of direction, through the setting of direction through groove and direction lug for the case only is linear motion along its length direction, can not be rotary motion, can effectively guarantee that the position change problem can not take place when its complete return.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a bypass valve for an underground screw according to the present invention;

FIG. 2 is a schematic view of a valve core of a bypass valve for an underground screw rod in a three-dimensional structure under an oblique depression;

FIG. 3 is a schematic view of a valve core of a bypass valve for an underground screw rod according to the present invention in a three-dimensional structure at an oblique elevation angle;

fig. 4 is a schematic end face structure view of one end of the return spring far away from the adjusting cylinder of the bypass valve for the downhole screw rod.

In the figure: 1. a valve body; 101. a component placement cavity; 2. a valve core; 201. a valve core through hole; 202. an annular groove; 203. a guide through groove; 3. a return spring; 4. a clamp spring; 5. an adjusting cylinder; 501. and (4) adjusting the concave hole.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, 2 and 3, in an embodiment of the present invention, a bypass valve for an underground screw rod includes a valve body 1, a valve core 2 and a return spring 3, a cylindrical component placing cavity 101 is disposed in the valve body 1, an annular clamp spring groove is disposed on a cavity wall of the component placing cavity 101, a central axis of the annular clamp spring groove is collinear with a central axis of the component placing cavity 101, and a clamp spring 4 is disposed in the annular clamp spring groove; the valve core 2 is arranged in the component placing cavity 101, the outer diameter of the valve core 2 is the same as the diameter of the component placing cavity 101, a valve core through hole 201 is formed in the valve core 2 along the length direction of the valve core, an annular groove 202 is formed in the end face of one end, away from the clamp spring 4, of the valve core 2, and the valve core through hole 201 is located inside the annular groove 202; be provided with the internal thread structure on the chamber wall of chamber 101 one end is placed to the part, and this end screw thread installs and adjusts a section of thick bamboo 5, is provided with the external screw thread structure on adjusting a section of thick bamboo 5's the outer cylinder wall, and case 2 is located between jump ring 4 and the regulation section of thick bamboo 5, and return spring 3's one end sets up in annular groove 202, and return spring 3's the other end supports presses on adjusting a section of thick bamboo 5's terminal surface.

The utility model discloses adjust the principle of return elasticity of return spring 3: after the snap spring 4 is installed in the annular snap spring groove formed in the wall of the component placing cavity 101, under the action of no other external force, one end, close to the snap spring 4, of the valve core 2 is pressed on the snap spring 4 under the action of the return elastic force of the return spring 3, and the compression amount of the return spring 3 can be adjusted by adjusting the depth of the adjusting cylinder 5 screwed into the component placing cavity 101, namely the return elastic force of the return spring 3 is adjusted. Therefore, the utility model discloses can conveniently adjust return spring 3's return elasticity under the condition of not taking apart the bypass valve and reinstalling and adjusting after taking apart.

Referring to fig. 4, in the embodiment of the present invention, the cross-sectional shape of the inner hole at one end of the adjusting cylinder 5 is a rectangular, regular hexagonal or spline-shaped structure, and the end is the end of the adjusting cylinder 5 away from the return spring 3, and the adjusting cylinder 5 can be conveniently screwed by using a tool through the non-circular structures, i.e. the compression amount and the return elastic force of the return spring 3 can be conveniently adjusted.

Referring to fig. 4, in the embodiment of the present invention, two adjusting concave holes 501, which may be three, four, or five, are provided on the end surface of the adjusting cylinder 5 far away from the end of the return spring 3, and the adjusting concave holes 501 are uniformly arranged along the circumferential direction of the adjusting cylinder 5, so that the adjusting depth of the adjusting cylinder 5 can be adjusted by the cooperation of the punch and the hammer.

Referring to fig. 2 and 3, in the embodiment of the present invention, a guiding through groove 203 is disposed on an outer cylindrical wall of the valve core 2 along a length direction thereof, and a guiding protrusion adapted to the guiding through groove 203 is disposed on a cavity wall of the component placing cavity 101 corresponding to the guiding through groove 203, for example, the cross-sectional shapes of the guiding through groove 203 and the guiding protrusion are both set to be an opening arc shape, such as a letter "C"; the cross-sectional shapes of the guide through groove 203 and the guide projection can be set to be open rectangles, such as the shape of Chinese character 'Contraband', and the valve core 2 can only do linear motion along the length direction of the valve core and can not do rotary motion through the arrangement of the guide through groove 203 and the guide projection, so that the problem of position change can not occur when the valve core is completely returned.

Referring to fig. 1, in the embodiment of the present invention, the outer walls at two ends of the valve body 1 are provided with external thread structures, so as to facilitate the installation of the valve body 1, and the valve body return spring 3 and the adjusting cylinder 5 are made of stainless steel, thereby effectively preventing the problem that the compression amount and the return elasticity of the return spring 3 cannot be adjusted due to rusting of the two.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bypass valve for an underground screw rod comprises a valve body (1), a valve core (2) and a return spring (3), and is characterized in that a cylindrical component placing cavity (101) is arranged in the valve body (1), an annular clamp spring groove is formed in the cavity wall of the component placing cavity (101), the central axis of the annular clamp spring groove is collinear with the central axis of the component placing cavity (101), and a clamp spring (4) is arranged in the annular clamp spring groove; the valve core (2) is arranged in the component placing cavity (101), the outer diameter of the valve core is the same as the diameter of the component placing cavity (101), a valve core through hole (201) is formed in the valve core (2) along the length direction of the valve core, an annular groove (202) is formed in the end face of one end, away from the clamp spring (4), of the valve core (2), and the valve core through hole (201) is located inside the annular groove (202); the utility model discloses a quick-witted component, including part placing cavity (101), valve core (2), adjusting cylinder (5), return spring (3), the part placing cavity is provided with internal thread structure on the chamber wall of chamber (101) one end, and this end screw thread installs adjusting cylinder (5), be provided with external thread structure on the outer cylinder wall of adjusting cylinder (5), valve core (2) are located jump ring (4) and adjust between cylinder (5), the one end of return spring (3) sets up in annular groove (202), the other end of return spring (3) supports presses on the terminal surface of adjusting cylinder (5).

2. The bypass valve for the downhole screw according to claim 1, wherein the cross-sectional shape of the inner bore of one end of the adjusting cylinder (5) is a rectangular, regular hexagonal or spline-shaped structure, and the end is the end of the adjusting cylinder (5) far away from the return spring (3).

3. The bypass valve for the downhole screw according to claim 1, wherein two adjusting concave holes (501) are formed in the end surface of the adjusting cylinder (5) far away from one end of the return spring (3), and the adjusting concave holes (501) are uniformly arranged along the circumferential direction of the adjusting cylinder (5).

4. A by-pass valve for a down-hole screw according to any one of claims 1-3, characterized in that the outer cylindrical wall of the valve core (2) is provided with a guiding through groove (203) along the length direction thereof, and the wall of the component placing cavity (101) is provided with a guiding projection adapted to the guiding through groove (203) at a position corresponding to the guiding through groove (203).

5. The bypass valve for the downhole screw according to claim 4, wherein the outer walls of the two ends of the valve body (1) are provided with external thread structures, and the valve body return spring (3) and the adjusting cylinder (5) are made of stainless steel materials.